Particle Precession Resonance Patents (Class 324/300)
  • Patent number: 10846862
    Abstract: An image processing method includes: assigning a predetermined new label to the pixels determined to be assigned the label; and setting a position of the pixel assigned the label as a target position and assigning the label with the same value to peripheral pixels located around the pixel at the target position. A label update step repeats a peripheral pixel determination step, a label assignment step of assigning the label to the peripheral pixels, a target position movement step of moving a new target position that is a position of any one of the peripheral pixels assigned the label, and a return position storage step of, when there are a plurality of peripheral pixels assigned the label, storing positions of the peripheral pixels, other than the peripheral pixel at the new target position moved in the target position movement step, until there is no return position.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: November 24, 2020
    Assignee: OLYMPUS CORPORATION
    Inventor: Mitsutomo Kariya
  • Patent number: 10830849
    Abstract: Systems and methods for rapidly ramping the magnetic field of a superconducting magnet, such as a superconducting magnet adapted for use in a magnetic resonance imaging system, are provided. The magnetic field can be rapidly ramped up or down by changing the current density in the superconducting magnet while monitoring and controlling the superconducting magnet's temperature to remain below a transition temperature. A superconducting switch is used to connect the superconducting magnet and a power supply in a connected circuit. The current generated by the power supply is then adjusted to increase or decrease the current density in the superconducting magnet to respectively ramp up or ramp down the magnetic field strength in a controlled manner. The ramp rate at which the magnetic field strength is changed is determined and optimized based on the operating parameters of the superconducting magnet and the current being generated by the power supply.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: November 10, 2020
    Assignee: SYNAPTIVE MEDICAL (BARBADOS) INC.
    Inventors: Jeff A. Stainsby, Chad T. Harris, Alexander G. Panther, Cameron A. Piron
  • Patent number: 10823811
    Abstract: In a method and magnetic resonance for calibrating a control sequence for the apparatus, having a first radio-frequency pulse and a second radio-frequency pulse, for a magnetic resonance examination of an examination region of an object, a first reference value for the first radio-frequency pulse for resonant excitation of a first substance is determined, and a second reference value for the second radio-frequency pulse for resonant excitation of a second substance is determined. The determination of the first reference value includes a selective excitation of the first substance and/or the determination of the second reference value includes a selective excitation of the second substance. The MR control sequence is calibrated by assignment, in a processor, of the first reference value to the first radio-frequency pulse and assignment of the second reference value to the second radio-frequency pulse.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: November 3, 2020
    Assignee: Siemens Healthcare GmbH
    Inventor: Uvo Hoelscher
  • Patent number: 10821542
    Abstract: A radio frequency (RF) power delivery system includes a first RF generator and a second RF generator. The first RF generator operates as a master RF generator, and the second RF generator operates as a slave RF generator. The slave RF generator includes a detector for sensing an electrical characteristic of the RF signal of the slave RF generator. The slave RF generator also includes a detector for sensing an electrical characteristic of the RF signal from the master RF generator. Operation of the slave RF generator is controlled by a host or controller. The host or controller operates the slave RF generator in accordance with electrical properties determined by the second detector.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 3, 2020
    Assignee: MKS Instruments, Inc.
    Inventors: Nicholas Nelson, David J. Coumou
  • Patent number: 10802099
    Abstract: A methods are provided for investigating a sample containing hydrocarbons by subjecting the sample to a nuclear magnetic resonance (NMR) sequence using NMR equipment, using the NMR equipment to detect signals from the sample in response to the NMR sequence, analyzing the signals to extract a distribution of relaxation times (or diffusions), and computing a value for a parameter of the sample as a function of at least one of the relaxation times (or diffusions), wherein the computing utilizes a correction factor that modifies the value for the parameter as a function of relaxation time for at least short relaxation times (or as a function of diffusion for at least large diffusion coefficients).
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: October 13, 2020
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Lalitha Venkataramanan, Fred K. Gruber, Tarek M. Habashy, Ridvan Akkurt, Badarinadh Vissapragada, Richard E. Lewis, Erik Rylander
  • Patent number: 10788550
    Abstract: According to some aspects, a method of producing a permanent magnet shim configured to improve a profile of a B0 magnetic field produced by a B0 magnet is provided. The method comprises determining deviation of the B0 magnetic field from a desired B0 magnetic field, determining a magnetic pattern that, when applied to magnetic material, produces a corrective magnetic field that corrects for at least some of the determined deviation, and applying the magnetic pattern to the magnetic material to produce the permanent magnet shim. According to some aspects, a permanent magnet shim for improving a profile of a B0 magnetic field produced by a B0 magnet is provided. The permanent magnet shim comprises magnetic material having a predetermined magnetic pattern applied thereto that produces a corrective magnetic field to improve the profile of the B0 magnetic field.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: September 29, 2020
    Assignee: Hyperfine Research, Inc.
    Inventors: Cedric Hugon, Michael Stephen Poole, Tyler S. Ralston
  • Patent number: 10788560
    Abstract: A method for verifying at least one default value for a magnetic resonance examination, a verifying unit, a magnetic resonance device and a computer program product are provided. According to the method, at least one default value for an electromagnetic property and a sequence segment are sent to a verifying unit. The verifying unit uses the sequence segment to determine at least one electromagnetic property. The at least one default value is verified by the verifying unit with respect to the at least one electromagnetic property.
    Type: Grant
    Filed: February 11, 2017
    Date of Patent: September 29, 2020
    Assignee: Siemens Healthcare GmbH
    Inventors: Carsten Prinz, Volker Schnetter
  • Patent number: 10779762
    Abstract: Disclosed are systems, biomarkers, and methods for the diagnosis of Alzheimer's Disease.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: September 22, 2020
    Assignee: Washington University
    Inventors: Dmitriy Yablonskiy, Yue Zhao
  • Patent number: 10742999
    Abstract: The techniques described herein relate to methods, apparatus, and computer readable media configured to encode or decode a region of interest associated with video data. A spherical region structure is associated with the video data that specifies the region of interest on a sphere, the spherical region structure including a reference point of the region of interest on the sphere, and data indicative of a set of side points, comprising a side point for each side of the region of interest on the sphere. The region of interest in the video data is determined based on the reference point and the set of side points. The video data can be composite video data. The spherical region structure, and/or metadata based on the spherical region structure, can be implicitly or explicitly associated with the video data.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: August 11, 2020
    Assignee: MediaTek Inc.
    Inventors: Xin Wang, Wang Lin Lai, Lulin Chen, Shan Liu
  • Patent number: 10702339
    Abstract: Embodiments include a system for determining cardiovascular information for a patient. The system may include at least one computer system configured to receive patient-specific data regarding a geometry of the patient's heart, and create a three-dimensional model representing at least a portion of the patient's heart based on the patient-specific data. The at least one computer system may be further configured to create a physics-based model relating to a blood flow characteristic of the patient's heart and determine a fractional flow reserve within the patient's heart based on the three-dimensional model and the physics-based model.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: July 7, 2020
    Assignee: HeartFlow, Inc.
    Inventor: Charles A. Taylor
  • Patent number: 10690800
    Abstract: Certain aspects of the present disclosure provide methods and apparatus for sensing a fluid flowing in a conduit using a mobile electron paramagnetic resonance (EPR) device. The mobile EPR device may include one or more EPR sensors for making EPR measurements and, for certain aspects, may include one or more other sensors for making other measurements. One example mobile EPR device for deploying in a conduit generally includes a housing configured to be conveyed by a fluid flowing in the conduit; a bore in the housing for receiving the fluid; and an EPR sensor disposed adjacent to the bore for EPR sensing of the fluid as the mobile EPR device traverses a section of the conduit.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: June 23, 2020
    Assignee: MICROSILICON, INC.
    Inventors: Omar Kulbrandstad, Manuel Godoy
  • Patent number: 10658572
    Abstract: A magnetoresistance effect element includes first and second magnetic layers having a perpendicular magnetization direction, and a first non-magnetic layer disposed adjacent to the first magnetic layer and on a side opposite to a side on which the second magnetic layer is disposed. An interfacial perpendicular magnetic anisotropy exists at an interface between the first magnetic layer and the first non-magnetic layer, and the anisotropy causes the first magnetic layer to have a magnetization direction perpendicular to the surface of the layers. An atomic fraction of all magnetic elements to all magnetic and non-magnetic elements included in the second magnetic layer is smaller than that of the first magnetic layer.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: May 19, 2020
    Assignee: TOHOKU UNIVERSITY
    Inventors: Hideo Sato, Shoji Ikeda, Mathias Bersweiler, Hiroaki Honjo, Kyota Watanabe, Shunsuke Fukami, Fumihiro Matsukura, Kenchi Ito, Masaaki Niwa, Tetsuo Endoh, Hideo Ohno
  • Patent number: 10651688
    Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for dynamically tuning circuit elements. One aspect includes a variable capacitance device. The device includes a first capacitor, a first switch, a second capacitor, a second switch, and control circuitry. The control circuitry is configured to adjust respective capacitances of the first and second capacitors by causing a first control signal to be applied to the first-switch control terminal for a duration of time in response to detecting a zero voltage condition across the first switch, and by causing a second control signal to be applied to the second-switch control terminal for the duration of time in response to detecting a zero voltage condition across the second switch.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: May 12, 2020
    Assignee: WiTricity Corporation
    Inventors: Curt Karnstedt, Christopher Buenrostro
  • Patent number: 10634630
    Abstract: A method for determining the solids content, fines content and/or particle size distribution of the solids in an oil sands process stream test sample comprising bitumen, solids and water using low-field time-domain NMR is provided which involves building a non-solids partial least squares calibration model using oil sands process streams calibration samples having a known bitumen content, solids content, water content, fines content and/or particle size distribution by subjecting the calibration samples to a first T1-weighted T2 measurement NMR pulse sequence that maximizes very fast relaxing signals and a second T1-weighted T2 measurement NMR pulse sequence that maximizes slow relaxing signals. The measurement of other sample properties strongly correlated with surface area, such as methylene blue index, can also be measured using a partial least squares calibration model.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: April 28, 2020
    Assignee: SYNCRUDE CANADA LTD.
    Inventor: Richard Paproski
  • Patent number: 10627468
    Abstract: Apparatus, methods, and other embodiments associated with NMR fingerprinting are described. One example NMR apparatus includes an NMR logic configured to repetitively and variably sample a (k, t, E) space associated with an object to acquire a set of NMR signals. Members of the set of NMR signals are associated with different points in the (k, t, E) space. Sampling is performed with t and/or E varying in a non-constant way. The varying parameters may include flip angle, echo time, RF amplitude, and other parameters. The NMR apparatus may also include a signal logic configured to produce an NMR signal evolution from the NMR signals, and a characterization logic configured to characterize a resonant species in the object as a result of comparing acquired signals to reference signals.
    Type: Grant
    Filed: September 19, 2012
    Date of Patent: April 21, 2020
    Assignee: Case Western Reserve University
    Inventors: Mark Griswold, Nicole Seiberlich, Vikas Gulani, Dan Ma
  • Patent number: 10613182
    Abstract: A method to quantify and map iron deposits in the brain with diffusion-weighted magnetic resonance imaging (MRI) is based on the differential sensitivity of mono-polar (MPG) gradient pulse diffusion sequences and bipolar (BPG) sequences on the local magnetic field gradients induced by iron deposits and their cross-term with the diffusion-encoding gradients.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: April 7, 2020
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Denis Le Bihan
  • Patent number: 10602957
    Abstract: Systems and methods for imaging and detecting the biofield of a living subject are provided. A biofield detection system can include a number of features, including a nuclear magnetic resonance imaging system, a fluid container configured to hold a fluid and the living subject, and a fluid management system configured to enhance a coherence of the fluid volume. The biofield detection system can implement a biofield detection scheme that compares a baseline NMR image of the fluid in the absence of the subject to a NMR image of the fluid surrounding the subject. The two images can be compared and analyzed to detect variances relating to field effects of the subject. Systems and methods are also provided in which environmental factors can be introduced to the fluid volume or the living subject. Subsequent detection scans can detect changes in the biofield based on the introduction of environmental factors.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: March 31, 2020
    Assignee: VARUNA BIOMEDICAL CORPORATION
    Inventor: Stanton Thomas
  • Patent number: 10575988
    Abstract: An RF (radio frequency) positioning system and related method for automated or assisted eye-docking in ophthalmic surgery. The system includes an RF detector system on a laser head and an RFID tag on a patient interface to be mounted on the patient's eye. The detector system includes four RF antennas located on a horizontal plane for detecting RF signals from the RFID tag, where one pair of antennas are located along the X direction at equal distances from the optical axis of the laser head and another pair are located along the Y direction at equal distances from the optical axis. Based on relative strengths and phase difference of the RF signals detected by each pair of antennas, the RF detector system determines whether the patient interface is centered on the optical axis. The RF detector system controls the laser head to move toward the patient interface until the latter is centered on the optical axis.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: March 3, 2020
    Assignee: AMO DEVELOPMENT, LLC
    Inventors: Harvey I. Liu, John P. Beale, Jose L. Garcia
  • Patent number: 10578709
    Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for detecting electronic counter measure (ECM) signals and embedding covert messages in radar or sonar signals. In one aspect, a method for detecting ECM signals includes receiving a radar return signal from an object. The method includes determining whether radar return signal includes a TM signal, and identifying the radar return signal as a skin return signal or an electronic counter measure signal based on whether the radar return signal includes the TM signal.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: March 3, 2020
    Assignee: TM IP Holdings, LLC
    Inventors: Daniel L. Hodges, Richard C. Gerdes
  • Patent number: 10578696
    Abstract: Method, system and non-transitory computer-accessible medium can be provided for performing magnetic resonance spectroscopy for at least one structure. For example, with such method and/or computer-accessible medium, it is possible to receive information related to a substantially simultaneous acquisition of a stimulated echo pathway and a double spin echo associated with at least one portion of the at least one structure.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: March 3, 2020
    Assignee: New York University
    Inventors: Oded Gonen, Assaf Tal
  • Patent number: 10578692
    Abstract: According to one embodiment, a gradient coil unit for a magnetic resonance imaging apparatus includes gradient coils for forming gradient magnetic fields in mutually orthogonal three axis directions. At least one of the gradient coils includes a conductor part along a coil pattern and a holding part holding the coil pattern. A passage of a coolant is formed inside at least one of the conductor part and the holding part. The passage has a non-constant cross section.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: March 3, 2020
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Kazuhiko Tsujita, Yoshitomo Sakakura
  • Patent number: 10568587
    Abstract: An X-ray-diagnostic apparatus generates time-series first vessel images corresponding to a first direction, and generates second vessel image corresponding to a second direction. The apparatus generates third vessel images corresponding to the second direction, by transforming more than one piece out of the first vessel images based on a blood vessel shape in one of the first vessel images and a blood vessel shape in at least one of the second vessel image, the third vessel image corresponding to respective time phases of the first vessel images. The apparatus generates first color image corresponding to the first direction by using more than one piece out of the first vessel images, and generates second color image corresponding to the second direction by using more than one piece out of the third vessel images. The apparatus displays a stereoscopic image based on the first color-image and the second color image.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: February 25, 2020
    Assignee: Canon Medical Systems Corporation
    Inventor: Satoru Ohishi
  • Patent number: 10571418
    Abstract: Hundreds of thousands of concrete bridges and hundreds of billions of tons of concrete require characterization with time for corrosion. Accordingly, protocols for rapid testing and improved field characterization systems that automatically triangulate electrical resistivity and half-cell corrosion potential measurements would be beneficial allowing discrete/periodic mapping of a structure to be performed as well as addressing testing for asphalt covered concrete. Further, it is the low frequency impedance of rebar in concrete that correlates to corrosion state but these are normally time consuming vulnerable to noise. Hence, it would be beneficial to provide a means of making low frequency electrical resistivity measurements rapidly. Further, prior art techniques for electrical rebar measurements require electrical connection be made to the rebar which increases measurement complexity/disruption/repair/cost even when no corrosion is identified.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: February 25, 2020
    Assignee: Giatec Scientific Inc.
    Inventors: Pouria Ghods, Rouhollah Alizadeh, Mustafa Salehi
  • Patent number: 10568765
    Abstract: A magnetic positioning system and related method for automated or assisted eye-docking in ophthalmic surgery. The system includes a magnetic field sensing system on a laser head and a magnet on a patient interface to be mounted on the patient's eye. The magnetic field sensing system includes four magnetic field sensors located on a horizontal plane for detecting the magnetic field of the magnet, where one pair of sensors are located along the X direction at equal distances from the optical axis of the laser head and another pair are located along the Y direction at equal distances from the optical axis. Based on relative magnitudes of the magnetic field detected by each pair of sensors, the magnetic field sensing system determines whether the patient interface is centered on the optical axis. The system controls the laser head to move toward the patient interface until the latter is centered on the optical axis.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: February 25, 2020
    Assignee: AMO DEVELOPMENT, LLC
    Inventors: Harvey I. Liu, John P. Beale
  • Patent number: 10564244
    Abstract: A method is provided for ascertaining at least one item of movement information describing a sought movement as a partial movement of an overall movement in an at least partially moved examination region. In the method, at least one excitation signal having a first frequency band is output and receiving signals generated by the excitation signal are recorded with a receiving coil arrangement, (e.g., a receiving coil arrangement of a magnetic resonance device), having a plurality of receiving channels. The coils of the receiving coil arrangement are designed to record a receiving frequency band including the first frequency band, wherein for ascertaining the movement information the complex receiving signals of the receiving channels are combined at one instant according to a combination specification ascertained over a period by an analysis of the receiving signals that identifies at least one component of a movement that contributes to the sought movement.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: February 18, 2020
    Assignee: Siemens Healthcare GmbH
    Inventors: Matthias Fenchel, Peter Speier
  • Patent number: 10557902
    Abstract: Radio frequency (RF) shields used with magnetic resonance imaging (MRI) apparatus may experience gradient field induced eddy currents and RF field induced eddy currents. These eddy currents can cause the RF shield to heat up at an undesirable rate. RF shields are designed to have a desired degree of RF shielding and a desired heating attribute. Design goals for RF shields include gradient field transparency and RF field opacity, both of which can be influenced by eddy currents. Example methods identify a gradient field that will induce eddy currents and identify an RF field that will induce eddy currents. If a region on the RF shield is identified where the desired heating attribute will not be achieved, then a pattern of axial cuts and azimuthal cuts can be made in the RF shield to reduce gradient eddy current heating in the RF shield while maintaining desired RF shielding.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: February 11, 2020
    Assignee: Case Western Reserve University
    Inventors: Robert W. Brown, Yong Wu, Zhen Yao, Shmaryu Shvartsman, Thomas Chmielewski, Timothy Eagan
  • Patent number: 10520642
    Abstract: The present invention provides a rock movement sensor including an inertial measurement assembly, a control assembly responsive to said inertial measurement assembly and a communication assembly coupled to the control assembly. The control assembly is arranged to determine a displacement associated with a blast or drop based on signals from the inertial measurement assembly. The communication assembly is preferably a wireless communication assembly. A surface unit corresponding to the rock movement sensor is provided which includes a processor programmed to operate a communications assembly to receive displacement data from the rock movement sensor. Consequently, the movement of an ore body due to a blast may be determined by locating a number of the rock movement sensors at known locations about the ore body prior to the blast and subsequently retrieving data values indicating a displacement relative to the known locations from the rock movement sensor post blast.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: December 31, 2019
    Assignee: MINDSPARK TECHNOLOGIES PTY LTD
    Inventor: Peter James Wortley
  • Patent number: 10520575
    Abstract: A system and method for an electron paramagnetic resonance imaging (EPRI) system includes a magnet configured to apply a static magnetic field to a subject to be imaged and a gradient coil configured to apply a magnetic field gradient to the static magnetic field. The system also includes a parallel plate waveguide (PPWG) configured to use a traveling wave to generate a radio frequency (RF) magnetic field over a volume of interest (VOI) in the subject to elicit EPRI data from the VOI and a processor configured to reconstruct the EPRI data into an image of the VOI.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: December 31, 2019
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Bahareh Behzadnezhad, Nader Behdad, Alan B. McMillan
  • Patent number: 10520571
    Abstract: In a method and apparatus for acquiring magnetic resonance data from a slice package composed of multiple measured slices as a target volume by executing a measuring sequence, prior to each scan of one of the measured slices, the measuring sequence includes a preparation pulse associated with the measured slice for signal suppression of a type of saturation molecule. This said preparation pulse acts on the entire target volume, and a pulse parameter of the preparation pulse is chosen for a measured slice group, composed of at least one measured slice, as a function of resonance information on the contiguous partial volume covered by the measured slice group.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: December 31, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: Flavio Carinci, Dominik Paul
  • Patent number: 10522253
    Abstract: The uncertainty, sensitivity, and/or standard deviation for a patient-specific hemodynamic quantification is determined. The contribution of different information, such as the fit of the geometry at different locations, to the uncertainty or sensitivity is determined. Alternatively or additionally, the amount of contribution of information at one location (e.g., geometric fit at the one location) to uncertainty or sensitivity at other locations is determined. Rather than relying on time consuming statistical analysis for each patient, a machine-learnt classifier is trained to determine the uncertainty, sensitivity, and/or standard deviation for the patient.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: December 31, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: Lucian Mihai Itu, Tiziano Passerini, Saikiran Rapaka, Puneet Sharma
  • Patent number: 10488476
    Abstract: An RF choke resonator assembly has a cylindrical magnetic field shielding case with openings at two ends thereof, a magnetic field shielding plate and a winding skeleton, and a capacitive plate inside the case. The magnetic field shielding plate closes the opening at one end of the case, and has a through-hole allowing a cable to pass there through. The cable is wound on the winding skeleton. The capacitive plate is disposed opposite the magnetic field shielding plate in the case, separated therefrom by the winding skeleton, and is electrically connected to the case in a closed manner. The capacitive plate has a through-hole allowing the cable to pass there through. The capacitive plate is remote from the other opening case end opposite the opening closed by the magnetic field shielding plate. An insulation space is formed at that other opening, having a length in the axial direction greater than or equal to one quarter of the length of the magnetic field shielding case in the axial direction.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: November 26, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: Shu Du, Jun You, Wen Ming Li, JianMin Wang
  • Patent number: 10466312
    Abstract: A method for detecting a magnetic field acting on a nitrogen vacancy (NV) diamond material comprising a plurality of NV centers may include controlling an optical excitation source and an RF excitation source to apply a pulse sequence comprising two optical excitation pulses and two RF excitation pulses to the NV diamond material, receiving a light detection signal from an optical detector based on an optical signal emitted by the NV diamond material due to the pulse sequence, measuring a first value of the light detection signal at a first reference period, the first reference period being before a period of the light detection signal associated with the two RF excitation pulses provided to the NV diamond material, measuring a second value of the light detection signal at a second reference period, the second reference period being after the period of the light detection signal associated with the two RF excitation pulses provided to the NV diamond material, and computing a measurement signal based on the me
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: November 5, 2019
    Assignee: LOCKHEED MARTIN CORPORATION
    Inventors: Laird Nicholas Egan, David Nelson Coar, Jon C. Russo
  • Patent number: 10466316
    Abstract: A Magnetic Particle Imaging (MPI) system including a mechanically-rotatable magnet generating a field-free line, where the system is capable of acquiring a plurality of projections at a plurality of rotation angles, and where the projection acquisition includes positioning the field free line at a plurality of positions at the plurality of angles.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: November 5, 2019
    Assignee: MAGNETIC INSIGHT, INC.
    Inventor: Patrick W. Goodwill
  • Patent number: 10459115
    Abstract: THIS INVENTION relates to a method and a device for detecting a target material at a distance. The device includes a means for indicating the direction to the target material, a primary energy source for subjecting a sample material to energy and a means for sensitizing the device, and specifically an indicating means thereof, such that the indicating means detects target material similar to the sample material.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: October 29, 2019
    Inventor: Daniel Rudolph Krugel
  • Patent number: 10444397
    Abstract: An apparatus for measuring nuclear magnetic resonance (NMR) properties of subsurface formations includes a magnet for pre-polarizing nuclear spins in the formations. A plurality of transmitter antennas is spaced apart along a length of the apparatus. The apparatus includes at least one of a receiver circuit selectively coupled to at least one of the plurality of transmitter antennas and a separate receiver antenna. The apparatus includes circuitry for applying radio frequency current pulses selectively to each of the plurality of transmitter antennas such that during a NMR measurement sequence while the apparatus is moving substantially only those of the plurality of transmitter antennas having radio frequency current pulses applied thereto are disposed longitudinally along a same region of interest in the subsurface formations.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: October 15, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Martin Hurlimann, Irfan Bulu, Yi-Qiao Song
  • Patent number: 10433729
    Abstract: An exam room shielding (10) for electromagnetically shielding a magnetic resonance imaging system (2) includes: a ceiling, a floor, side walls (11) interconnecting the ceiling and the floor, and a tubular shielding device (12), which is arranged to surround an examination tube (3) of the magnetic resonance imaging system (2). Both longitudinal ends (13) of the tubular shielding device (12) are circumferentially connected to openings (14)of the side walls (11) which form the outline of an U-shaped room (15) with the longitudinal ends (13) of the tubular shielding device (12) interconnecting the lateral flanks (16) of the U-shaped room (15). A magnetic resonance imaging system (2) includes an exam room (1), with the above exam room shielding (10). An additional treatment or diagnosis device (7) can be located at an outer circumference of the tubular shielding device (12). This separates the space inside the exam room into a compartment free of RF noise, i.e.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: October 8, 2019
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Johannes Adrianus Overweg, Falk Uhlemann
  • Patent number: 10429463
    Abstract: Magnetic resonance imaging (MRI) systems and methods to effect MRI data acquisition with reduced noise in fast spin echo (FSE) and spin echo (SE) implementations are described. The improved MRI data acquisition is performed by acquiring k-space data while maintaining a constant or near constant slice select gradient amplitude throughout a sequence kernel. The acquired k-space data can then be used to generate an MR image.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: October 1, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventor: Andrew J. Wheaton
  • Patent number: 10428160
    Abstract: An apparatus includes a hydrogel including a metallic compound, a surfactant, an acid, agarose and water. The hydrogel is substantially colorless. A radiated hydrogel having a color is formed when the hydrogel receives a low dose of ionizing radiation.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: October 1, 2019
    Assignees: ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY, BANNER HEALTH—An Arizona Nonprofit Corporation
    Inventors: Kaushal Rege, Karthik Subramaniam Pushpavanam, Stephen Sapareto
  • Patent number: 10422915
    Abstract: Nuclear magnetic resonance apparatuses and systems are described. In an example, the apparatus comprises a tool housing and a magnet assembly disposed within the tool housing to produce a magnetic field in a volume in a geological formation. An external housing containing an antenna assembly is coupled to the tool housing.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: September 24, 2019
    Assignee: Halliburton Energy Services ,Inc.
    Inventors: Rebecca Corina Jachmann, Jie Yang, Daniel Lee Miller
  • Patent number: 10422914
    Abstract: A magnetic resonance method includes providing a pulse sequence that affects different measurement regions in presence of a magnetic field gradient, the pulse sequence having multiple pulse shapes and multiple characteristic interecho intervals (TEs).
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: September 24, 2019
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Paul Joseph Ganssle, Shriram Sarvotham
  • Patent number: 10413022
    Abstract: A buckle with a first pawl that is biased by a pair of magnets that are oriented in opposition to each other to provide a repelling force, and with a second pawl that is biased by another pair of magnets that are oriented in opposition to each other to provide a repelling force.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: September 17, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Ariane Sarzi Porto, Nelson Pudles, Nathan W. Safe
  • Patent number: 10408902
    Abstract: A method for improving shim pre-settings of a magnetic resonance device and a magnetic resonance device are provided. Efficient computation of shim settings for magnetic resonance imaging is provided by the method. The method includes loading of shim pre-settings from a database, creating shim settings using the shim pre-settings for recording magnetic resonance image data of an examination object by a magnetic resonance device, and activating a shim unit of the magnetic resonance device for recording the magnetic resonance image data. The method also includes using the created shim settings, improving the shim pre-settings using the created shim settings, and storing the improved shim pre-settings in the database.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: September 10, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventor: Andrew Dewdney
  • Patent number: 10408901
    Abstract: Acoustic noise reduction is achieved in a high-speed imaging method such as a phase-compensation type GE sequence, which is not provided with sufficiently long intervals for applying the gradient magnetic field pulses. A band-stop filter is used to reduce components of a frequency band in the gradient magnetic field waveform, having a high sound pressure level being a source of sound, thereby performing the noise reduction. In general, when a band of the gradient magnetic field is reduced, the waveform is likely to be considerably distorted, failing to satisfy imaging conditions. Therefore, the distorted waveform is shaped so that the imaging conditions are satisfied. The sound pressure level of the gradient magnetic field waveform is calculated by using a response function inherent to the device.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: September 10, 2019
    Assignee: Hitachi, Ltd.
    Inventors: Yo Taniguchi, Toru Shirai, Hisaaki Ochi
  • Patent number: 10386526
    Abstract: Methods and systems are presented in this disclosure for estimation of formation properties and pipe properties using ranging measurements. Embodiments of the present disclosure utilize ranging measurements to first determine a defined slope (e.g., leakage rate) of an electrical current signal flowing along a wellbore. The determined slope (e.g., leakage rate) may be then used to estimate properties of a formation surrounding the wellbore (e.g., formation resistivity) and properties of a conductive material (casing pipe) deployed in the wellbore (e.g., pipe resistance). Based on the estimated properties of the formation and the conductive material, drilling operation in a drilling well can be adjusted, and repair of defects or mechanical deformations on the casing pipe can be initiated.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: August 20, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Hsu-Hsiang Wu, Burkay Donderici
  • Patent number: 10371764
    Abstract: An optical pumping and isotropic measurement magnetometer. The magnetometer is all-optical in the sense that resonance between Zeeman sub-levels is induced by modulating the intensity or the frequency of the pump beam. Resonance is detected either using the pump beam itself or an unmodulated probe beam. The pump beam is linearly polarised and its polarisation direction is kept constant relative to the direction of the magnetic field to be measured, so that a measurement independent of the orientation of the field can be made.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: August 6, 2019
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Sophie Morales, Mathieu Baicry, Francois Bertrand, Matthieu Le Prado, Jean-Michel Leger, Umberto Rossini, Jaroslaw Rutkowski
  • Patent number: 10371774
    Abstract: A method for carrying out two-field nuclear magnetic resonance (=2FNMR) measurements involves preparing a sample (9a) in a first working volume (5) of a highly homogeneous magnetic field with a first field strength; transferring the sample (9a) to a second working volume (7) with a magnetic field having lower homogeneity and having a second field strength, wherein the first field strength is at least 2 Tesla larger than the second field strength; manipulating the sample (9a) at the second working volume (7) by applying a sequence of radio-frequency (=RF) and/or field gradient pulses; transferring the sample (9a) back to the first working volume (5); and detecting an NMR signal of the sample (9a) in the first working volume (5). The method allows for NMR experiments with which more and/or improved quality information about an investigated sample can be obtained.
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: August 6, 2019
    Assignees: Bruker S.A.S, Ecole normale supérieur, Centre National de la Recherche Scientifique, Université Pierre et Marie Curie (Paris 6)
    Inventors: Samuel Cousin, Cyril Charlier, Fabien Ferrage, Jean-Max Tyburn, Thorsten Marquardsen
  • Patent number: 10359480
    Abstract: Measuring a sample includes providing a magnetic field at the sample using an electromagnetic field resonator. The electromagnetic field resonator includes two or more resonant structures at least partially contained within dielectric material of a substrate, at least a first resonant structure configured to provide the magnetic field at the sample positioned in proximity to the first resonant structure. The sample is characterized by an electron spin resonance frequency. A size of an inner area of the first resonant structure and a number of resonant structures included in the electromagnetic field resonator at least partially determine a range of an operating resonance frequency of the electromagnetic field resonator that includes the electron spin resonance frequency. Measuring the sample also includes receiving an output optical signal from the sample generated based at least in part on a magnetic field generated by the electromagnetic field resonator.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: July 23, 2019
    Assignee: PRESIDENTS AND FELLOWS OF HARVARD COLLEGE
    Inventors: Khadijeh Bayat, Marko Loncar
  • Patent number: 10359491
    Abstract: The present invention is directed to a system and method for magnetic resonance imaging including an extended Fourier transform-based velocity-selective pulse train design with a pair of refocusing pulses within each velocity encoding step and accompanying phase cycling between different velocity encoding steps. The present invention is robust to B0/B1 field inhomogeneity and eddy current effects. The utility of this technique, through a velocity-selective inversion pulse, is demonstrated in a 2D velocity-selective arterials spin labeling study, which shows a reasonable agreement in CBF quantification with the standard PCASL method.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: July 23, 2019
    Assignee: The Johns Hopkins University
    Inventors: Qin Qin, Peter Van Zijl
  • Patent number: 10359493
    Abstract: An MRI system for performing time resolved MR imaging of an object with grouped data acquisition is provided. The MRI system includes an MRI controller in electronic communication with a magnet assembly and operative to sample a group of data points within a first region of a k-space. The first region includes a central sub-region and a first peripheral sub-region. The MRI controller is further operative to sample a group of data points within a second region of the k-space. The second region includes the central sub-region and a second peripheral sub-region different from the first peripheral sub-region.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: July 23, 2019
    Assignee: General Electric Company
    Inventors: Ersin Bayram, Naoyuki Takei, Yuji Iwadate, Kang Wang, Lloyd Estkowski
  • Patent number: 10349909
    Abstract: Systems and methods are provided that acquire image data of a first location of a region of interest (ROI) when located in a field of view of a medical imaging system as a contrast material injected into the ROI passes through the first location. The systems and methods further determine from the image data of the first location when a first contrast metric is reached, and after determining the image data of the first location, position the second location of the ROI in the field of view of the medical imaging system. The systems and methods further acquire image data of the second location as the contrast material passes through the second location, and determine from the image data of the second location when the contrast material reaches a second contrast metric.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: July 16, 2019
    Assignee: General Electric Company
    Inventors: Darin Robert Okerlund, Mark Vincent Profio, Christine Carol Hammond, John Irvin Jackson, Judy Marie Graney, Chelsey Amanda Lewis